LDK is a set of tools that are designed to make 2D game development easier and faster.
It's divided into several programs,each one with it's own functionality. It consists of a Character Editor (create characters with proper animations) an Effect Editor (for special effects and particle systems) and the World Editor where all the functionality of a game is done.
This tool is being developed by PauldronGames.

Some of them are: better control over a placed object, scaling and rotation is now supported anda new Assets Browser has been coded from the ground up. Fixed a big issue when building the game project. It would output a file with a huge size.
Most of the changes can't be noticed to the naked eye, but they were necessary. For the next update we’re preparing something very special, so stay tuned.